/**
 *  console.h - Console program based on uart.
 *
 *  Copyright (C) 2008-2009 ZhangHu
 *  All rights reserved.
 *  E-MAIL: anmnmnly@gmail.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
#include "console.h"
#include "drivers/chdev.h"
#include "drivers/uart.h"


char_t RevByte(void) {
    char_t ch = 0;
    chdev_t *dev = NULL;

    dev = (chdev_t*)device_open("uart0");
    if(dev == NULL)
    {
        return 0;
    }

    dev->op->open();
    dev->op->read(&ch, 1, dev->loff);
    dev->op->close();
    device_close((device_t*)dev);
    return ch;
}



uword_t RevStr(char_t *buf, word_t len) {
    word_t cnt;
    chdev_t *dev = NULL;

    if(buf == NULL) {
        return 0;
    }

    dev = (chdev_t*)device_open("uart0");
    if(dev == NULL)
    {
        return 0;
    }

    dev->op->open();
    cnt = dev->op->read(buf, len, dev->loff);
    dev->op->close();
    device_close((device_t*)dev);
	return cnt;
}



void SendByte(char_t ch) {
    chdev_t *dev = NULL;

    dev = (chdev_t*)device_open("uart0");
    if(dev == NULL) {
        return;
    }

    dev->op->open();
    dev->op->write(&ch, 1, dev->loff);
    dev->op->close();

    device_close((device_t*)dev);
}



uword_t SendStr(char_t *buf) {
    word_t snd_cnt;
    char ch;
    chdev_t *dev = NULL;

    if(buf == NULL) {
        return 0;
    }

    dev = (chdev_t*)device_open("uart0");
    if(dev == NULL)
    {
        return 0;
    }

	snd_cnt = 0;
    dev->op->open();

     while(*buf != '\0') {
        ch = *buf;
        dev->op->write(&ch, 1, dev->loff);
        snd_cnt++;
        buf++;
    }

    dev->op->close();
    device_close((device_t*)dev);

    return snd_cnt;
}



#include <stdarg.h>
#include <stdio.h>
/* Not recommended to do so, but this function is very convenient */
void Print(char_t *fmt, ...) {
    va_list ap;
    char_t str[128];

    va_start(ap, fmt);
    mac_disable_irq();
    vsprintf(str, fmt, ap);
    mac_enable_irq();
    SendStr(str);
    va_end(ap);
}



void Clear(void) {
    chdev_t *dev = NULL;

    dev = (chdev_t*)device_open("uart0");
    if(dev == NULL) {
        return;
    }

    dev->op->open();
    dev->op->ioctl(UART_CMD_RESET, NULL);
    dev->op->close();
    device_close((device_t*)dev);
}

